/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.apache.causeway.core.metamodel.facets.object.domainservice.annotation;

import java.util.Optional;

import org.apache.causeway.applib.annotation.DomainService;
import org.apache.causeway.applib.id.LogicalType;
import org.apache.causeway.commons.collections.Can;
import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
import org.apache.causeway.core.metamodel.facets.object.domainobject.AliasedFacetForDomainObjectAnnotation;
import org.apache.causeway.core.metamodel.facets.object.logicaltype.AliasedFacet;
import org.apache.causeway.core.metamodel.facets.object.logicaltype.AliasedFacetAbstract;

/**
 * AliasedFacet based on presence of {@link DomainService#aliased()}.
 * <p>
 * Analogous to {@link AliasedFacetForDomainServiceAnnotation}.
 * @see AliasedFacetForDomainObjectAnnotation
 */
public class AliasedFacetForDomainServiceAnnotation
extends AliasedFacetAbstract {

    public static Optional<AliasedFacet> create(
            final Optional<DomainService> domainServiceIfAny,
            final Class<?> correspondingClass,
            final FacetHolder holder) {

        return domainServiceIfAny
                .map(annot->annot.aliased())
                .map(Can::ofArray)
                .filter(Can::isNotEmpty)
                .map(aliasNames -> new AliasedFacetForDomainServiceAnnotation(
                        aliasNames
                            .map(aliasName->LogicalType.eager(correspondingClass, aliasName)),
                        holder));
    }

    private AliasedFacetForDomainServiceAnnotation(
            final Can<LogicalType> aliases,
            final FacetHolder holder) {
        super(aliases, holder);
    }
}
